Improvement in rigging-screws



Patent-ed Feb. 27, 1872- No.124J08.

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Pivrmv'rI OFFICE.

JOHN R. ANDERSON, OF NEW YORK, N. Y.

IMPROVEMENT IN RlGGlNG-SCREWS.

Specification forming part of Letters,Patent No. 124,108, dated February27, 1872.

To all whom it may concern:

Be it known that I, J onN R. ANDERSON, of the city, county, and State ofNew York, have invented a new land useful Improvement in Rigging-Screws;and I do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanyng drawingformin g a part of this speciiication.

The object of this invention is to enable one rigging-screw to he usedfor different-sized ri gging. To this end, it consists in a series ofpairs of removable clamps ot'various sizes which are secured within thejaws of the rigging screw in such manner that they may be easily changedand the whole operated in the same manner as an ordinary rigging-screw.

In the accompanying drawing, Figure l is a face view of a rigging-screwhaving a pair of my clamps applied, showing` it on the scale of aboutthree inches to the foot. Fig. 2 is a section ot' a portion ofthe same.Fig. 3 is an edge of a large pair of clamps, and Fig. 4 is a back viewot' one ofthe same.

Similar letters of reference indicate corresponding parts in all thefigures.

A and B are the two jaws of the riggingscrew, attached, by two rods, CC, to the piece l), through which the operatin g screw E screws in theusual manner. The inner jaw B slides upon the rods G C', being providednear each end, for this purpose, with a hole, af, through which one ofthe rods C O passes. The outer jaw A is hinged at one end to the rod Cby a pin, b, and has formed near its other end a hole, c, through whichextends the rod O, to which it is secured by a pin, d, passing throughits projecting' end. G G are the clamps fitted to the jaws A B. Theexterior or outer sides of these clamps are made to conform to the innersides of the jaws A and B, and the inner or adjacent sides of the clampsare made of dit ferent sizes and shapes to suit diii'erent-sizedrigging, those, G G', shown in Fig. 3 being for larger-sized riggingthan those, G G, in Fig. l. The clamps arenotched at one end to iit therod O, and have formed near the other holes e for the reception of theother rod C. The screw E has alever, F, ext-ending through its head, bymeans of which it is turned, and itis grooved near its other end for thereception of two pins, f j', that extend through the jaw B into thegroove, and thereby secure the screw to the said jaw, so as to becapable of turning without it. Y

The rigging-screw is used to hold rigging after having been set up whileit is being moused or parceled. The jaws ofthe riggingscrew, without anyinterposed clamps, are used to hold the large-sized rigging, and to holdsmaller sizes a pair of clamps is secured between the jaws. This is doneby iirst removing the pin d and swinging the jaw A back; the clamps arethen threaded on the rod C and their notched ends fitted to the rod O 5the jaw A is then swung up in place and the pin d in serted through theprojecting end otthe rod C, and the whole is thereby secured in place.

The operation is the same as that of an ordinary rigging-screw, therigging being simply inserted between the jaws or clamps and the screwturned to tightly clamp and hold it.

Vhat I claim as my invention, and desire to secure by Letters Patent,is-

The combination of the removable clamps G G with the jaws A and B andthe rods O O, substantially as and for the purpose herein set forth.

J OH N R. ANDERSON.

Witnesses:

J. W. CooMBs, B. E. RABEAU.

